<template>
  <div>

    <el-upload
        :action="documentUrl"
        :headers="headerObj"
        :on-success="uploadFile"
        accept=".pdf,.doc,.docx,.zip,.rar,.xls,.xlsx,.PDF,.DOC,.DOCX,.txt"
        class="uploadFile"
        multiple
        :limit="1">
    </el-upload>

    <!-- Two-way Data-Binding -->
    <quill-editor
        ref="myQuillEditor"
        v-model="content"
        :options="editorOption"
        class='.editor'
        @blur="onEditorBlur($event)"
        @focus="onEditorFocus($event)"
        @ready="onEditorReady($event)"
        @change="onEditorChange($event)"
    />

    <form action method="post" enctype="multipart/form-data" id="uploadFormMulti">
      <input
          style="display: none"
          :id="uniqueId"
          type="file"
          name="file"
          multiple
          accept="image/jpg, image/jpeg, image/png, image/gif, image/webp"
          @change="uploadImg('uploadFormMulti')"
      />
    </form>

  </div>
</template>

<script>
// You can also register Quill modules in the component
import 'quill/dist/quill.core.css'
import 'quill/dist/quill.snow.css'
import 'quill/dist/quill.bubble.css'
import axios from 'axios'
//加入以下引用
import ImageResize from "quill-image-resize-module" // 引用
import {ImageDrop} from "quill-image-drop-module"

Quill.register("modules/imageDrop", ImageDrop)
Quill.register("modules/imageResize", ImageResize) // 注册

import {quillEditor} from 'vue-quill-editor'

import {Quill} from 'vue-quill-editor'

const Link = Quill.import('formats/link');

class FileBlot extends Link {  // 继承Link Blot
  static create(value) {
    let node = undefined
    if (value && !value.href) {  // 适应原本的Link Blot
      node = super.create(value);
    } else {  // 自定义Link Blot
      node = super.create(value.href);
      // node.setAttribute('download', value.innerText);  // 左键点击即下载
      node.innerText = value.innerText;
      node.download = value.innerText;
    }
    return node;
  }
}

FileBlot.blotName = 'link';
FileBlot.tagName = 'A';
Quill.register(FileBlot);

// 工具栏配置
const toolbarOptions = [
  ["bold", "italic", "underline", "strike"], // 加粗 斜体 下划线 删除线 -----['bold', 'italic', 'underline', 'strike']
  ["blockquote", "code-block"], // 引用  代码块-----['blockquote', 'code-block']
  [{header: 1}, {header: 2}], // 1、2 级标题-----[{ header: 1 }, { header: 2 }]
  [{list: "ordered"}, {list: "bullet"}], // 有序、无序列表-----[{ list: 'ordered' }, { list: 'bullet' }]
  [{script: "sub"}, {script: "super"}], // 上标/下标-----[{ script: 'sub' }, { script: 'super' }]
  [{indent: "-1"}, {indent: "+1"}], // 缩进-----[{ indent: '-1' }, { indent: '+1' }]
  [{direction: "rtl"}], // 文本方向-----[{'direction': 'rtl'}]
  [{size: ["small", false, "large", "huge"]}], // 字体大小-----[{ size: ['small', false, 'large', 'huge'] }]
  [{header: [1, 2, 3, 4, 5, 6, false]}], // 标题-----[{ header: [1, 2, 3, 4, 5, 6, false] }]
  [{color: []}, {background: []}], // 字体颜色、字体背景颜色-----[{ color: [] }, { background: [] }]
  [{font: []}], // 字体种类-----[{ font: [] }]
  [{align: []}], // 对齐方式-----[{ align: [] }]
  ["clean"], // 清除文本格式-----['clean']
  ["link", "image", "video", "upload"], // 链接、图片、视频、文件-----['link', 'image', 'video','upload']
];

export default {
  components: {
    quillEditor
  },
  data() {
    return {
      headerObj: {
        Authorization: localStorage.getItem('access_token'),
      },
      documentUrl: `${this.HOST}file/text/upload`,
      uniqueId: "uniqueId",
      fileUniqueId: "fileUniqueId",
      // 富文本编辑器默认内容
      content: '',
      pictureUri: '',
      //富文本编辑器配置
      editorOption: {
        theme: "snow",
        placeholder: "请输入正文",
        modules: {
          imageDrop: true,
          imageResize: {
            displayStyles: {
              backgroundColor: "black",
              border: "none",
              color: "white"
            },
            modules: ["Resize", "DisplaySize", "Toolbar"]
          },
          history: {
            delay: 2000, // 在2000毫秒内的更改将被合并为单次更改
            maxStack: 500, // 历史记录撤销/重做堆栈的大小
            userOnly: true // 仅撤销或重做用户的更改。
          },
          //  富文本编辑器配置
          toolbar: {
            container: toolbarOptions,
            handlers: {
              upload: value => { //编辑器-上传文件
                if (value) {
                  console.log("执行了Upload点击事件")
                  document.querySelector('.uploadFile input').click()
                }
              }
            }
          }
        }
      },
    }
  },
  methods: {
    setContent(str){
      this.content = str
    },
    initFileUploadButton() {
      const uploadButton = document.querySelector('.ql-upload')
      uploadButton.className = 'ql-upload'
      uploadButton.innerHTML = '<i class="el-icon-document-add" style="font-size: 18px;color: black"></i>'
    },
    //失去焦点事件
    onEditorBlur(quill) {
      console.log('editor blur!', quill)
    },
    //获得焦点事件
    onEditorFocus(quill) {
      console.log('editor focus!', quill)
    },
    // 准备富文本编辑器
    onEditorReady(quill) {
      console.log('editor ready!', quill)
    },
    setInitialValue(content) {
      document.querySelector('.editor').root.innerHTML = content
    },
    //内容改变事件
    onEditorChange({quill, html, text}) {
      // console.log('editor change!', quill, html, text)
      this.content = html
    },
    uploadImg: async function () {
      const _this = this;
      //构造formData对象
      const formData = new FormData();
      formData.append("file", document.getElementById(_this.uniqueId).files[0]);
      let config = {
        headers: {'Content-Type': 'multipart/form-data'}
      }
      try {
        //调用上传文件接口
        axios.post(`${this.HOST}file/text/upload`, formData, config).then(res => {
          //返回上传文件的地址
          console.log("res", res)
          let info = res.data
          // -------- 拼URL
          if (this.pictureUri === '') {
            this.pictureUri = info.data;
          }
          let url = `${this.imgURL}` + info.data;
          if (url != null && url.length > 0) {
            let Range = _this.editor.getSelection();
            url = url.indexOf("http") !== -1 ? url : "http:" + url;
            //上传文件成功之后在富文本中回显(显示)
            _this.editor.insertEmbed(
                Range != null ? Range.index : 0,
                "image",
                url
            );
          } else {
            _this.$message.warning("图片上传失败");
          }
          //成功之后,将文件的文本框的value置空
          document.getElementById(_this.uniqueId).value = "";
        });
      } catch ({message: msg}) {
        document.getElementById(_this.uniqueId).value = "";
        _this.$message.warning(msg);
      }
    },
    uploadFile: async function () {
      const _this = this;
      //构造formData对象
      const formData = new FormData();
      formData.append("file", document.getElementById(_this.uniqueId).files[0]);
      let config = {
        headers: {'Content-Type': 'multipart/form-data'}
      }
      try {
        //调用上传文件接口
        axios.post(`${this.HOST}file/text/upload`, formData, config).then(res => {
          //返回上传文件的地址
          console.log("res", res)
          let info = res.data
          // -------- 拼URL
          let url = `${this.imgURL}` + info.data;
          if (url != null && url.length > 0) {
            let Range = _this.editor.getSelection();
            url = url.indexOf("http") !== -1 ? url : "http:" + url;
            //上传文件成功之后在富文本中回显(显示)
            _this.editor.insertEmbed(
                Range != null ? Range.index : 0,
                "image",
                url
            );
          } else {
            _this.$message.warning("图片上传失败");
          }
          //成功之后,将文件的文本框的value置空
          document.getElementById(_this.uniqueId).value = "";
        });
      } catch ({message: msg}) {
        document.getElementById(_this.uniqueId).value = "";
        _this.$message.warning(msg);
      }
    },
  },
  computed: {
    //当前富文本实例
    editor() {
      return this.$refs.myQuillEditor.quill;
    }
  },
  mounted() {
    this.initFileUploadButton()

    const _this = this;
    const imgHandler = async function (image) {

      if (image) {
        const fileInput = document.getElementById(_this.uniqueId); //隐藏的file文本ID
        fileInput.click(); //加一个触发事件
      }
    };
    _this.editor.getModule("toolbar").addHandler("image", imgHandler);
  }
};
</script>

<style lang='scss'>
.ql-container {
  min-height: 300px;
}

.editor {
  line-height: normal !important;
  height: 500px;
}

.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}

.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0;
  content: "保存";
  padding-right: 0;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}

.uploadFile {
  width: 0;
  height: 0;
  display: none;
}

.ql-upload {
  display: none;
}

</style>



